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192985144 = 231110121713
BaseRepresentation
bin10111000000010…
…11100000111000
3111110010122211221
423200023200320
5343401011034
631052201424
74532226622
oct1340134070
9443118757
10192985144
1199a31660
1254769274
1330c9c3c1
141b8b7c12
1511e20bb4
hexb80b838

192985144 has 32 divisors (see below), whose sum is σ = 398669040. Its totient is φ = 86848000.

The previous prime is 192985127. The next prime is 192985153. The reversal of 192985144 is 441589291.

It is a self number, because there is not a number n which added to its sum of digits gives 192985144.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1969 + ... + 19744.

Almost surely, 2192985144 is an apocalyptic number.

It is an amenable number.

192985144 is an abundant number, since it is smaller than the sum of its proper divisors (205683896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

192985144 is a wasteful number, since it uses less digits than its factorization.

192985144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21831 (or 21827 counting only the distinct ones).

The product of its digits is 103680, while the sum is 43.

The square root of 192985144 is about 13891.9093000206. The cubic root of 192985144 is about 577.8848283674.

It can be divided in two parts, 19298 and 5144, that added together give a palindrome (24442).

The spelling of 192985144 in words is "one hundred ninety-two million, nine hundred eighty-five thousand, one hundred forty-four".

Divisors: 1 2 4 8 11 22 44 88 101 202 404 808 1111 2222 4444 8888 21713 43426 86852 173704 238843 477686 955372 1910744 2193013 4386026 8772052 17544104 24123143 48246286 96492572 192985144